Snowplow



J. A. LITT May 14, 1929.

SNOWPLOW Filed July 2, 1928 F/G. Z,

flatented May 14, 1929.

UNITED STATES JAMES ALEXANDER LITT, F STRATFORD, UNTARO, CANADA.

SNOWPLOW.

Application filed July 2,

lilly invention relates to improvements in snow plows, of the type disclosed in my lllanadian application Serial No. 334,122, filed lFeln-uary 21st7 1928, and United States application lerial lilo. 256,337, filed `February 23rd, 1923, and the object of the present in- 'vr-mtion is to provide a more rigid and posi- 'tive means for adjusting the angular position of the plow in relation to the road surface, and also to provide simple means whereby the .snow plow may be readily elevated from the road surface and carried by an undercarriage when it is desired to transport the plow from place to place, and it consists essentially of the arrangement and construction of parts as hereinafter more particularly explained.

lli 1 is a perspective view of my plow.

lfig. 2 is a longitudinal sectional view through the plow.

lin the drawing like characters of reference indicate corresponding parts in each ligure.

' 'lille body of the plow consists of a platform 1 adapted when in the operative position to incline upward from its cutting or forward edge which bears on the surface of the road. lhe rear edge of the platform is provided with a V-shaped recess l.c along the edges of which walls 2 and 3 extend upwardly to form the plow point proper which is V- shaped in form, the walls being provided at their upper edges with upwardly extending :llanges 2X and 3*..

flis deflecting member which is pivotally supported at its inner end upon a rod 5 j ournalled at its lower end in the platform 1 and at its upper end in a bearing plate 6 secured 4to the flanges 2X and 3x and extending for wardly of the apex of the plow point.

lit each side of the platform 1 adjacent its forward edge is located a standard member 6*9 the standard members 6X being connected at their upper ends by a cross bar 7 which is preferably in the form of an angle barg the en ds of which are connected by inclined braces 3 and 9 to the plates 6.

10 is an adjusting bolt which may be in the form of a rod extending downward through the horizontal flange of the angle bar 7 through the deflecting member l into any one of the series of orifices l1 formed in the member 1. By this means the angular position of the deflecting member 4 may be adjusted as required.

ln the recess formed in the rear edge of the platform 1 and by the walls 2 and 3 is located 1928. Serial No. 289,786.

a rectangular frame 12, the side bars of which are formed by angle bars which provide vertical channels in which a supplemental. vertically adjustable frame 13 is movable.

rl"he inwardly extending flanges of the an gle bars 12 are provided with a vertical series of orifices l2X and the adjacent flanges of the frame 13 with an orifice 13X through which a pin lil extends, such pin passing through any one of the orifices l2 to adjust the sup-- plemental frame 13 to any desired position.

l5 are push bars which are jjiivoted at 1G to any suitable point beneath the platform 1 adjacent the front end thereof. The forward end of the push bars extend through recesses 16X in the supplemental frame 13 and are pivotally connected at 17 to the push bars 13 of a tractor or other suitable device by which the snow plow is operated.

In order to adjust the angular position of the snow plow in relation to the road surface all it is necessary to do is to withdraw the pins 14 and move the supplemental frame 13 within the angle bars 12 to the desired position, and then reinsert the pin 13x.

19 and 2U are bearing standards preferably carried by the flanges 2X and 3x at each side of the Vshaped recess hereinbefore referred to. 21is a shaft turnably mounted. in the bearings 19 and 20 and on which is secured a winding drum 22. 23 is a plate or frame provided intermediately of its length at each side with lugs 2li which are pivoted at 25 in brackets 26 secured to the lower face of the platform l. 27 is an axle carried at the forward end of the plate or frame 23 and on. which are mounted carrier wheels 23. 29 is a cable or chain secured at its lower end adjacent tlie rear end of the plate or frame 23. The upper end of the cable or chain 29 is wound around the drum 22 and is secured thereto. 30 is a bevelled gear secured to the shaft 2l. 31 is an operating shaft provided on its inner end with a bevelled gear 32 meshing with the bevelled gear 30. The inner end of the shaft is preferably carried in a bracket 33 which is swung upon the shaft 21 as indicated at 34: and 35. Theopposite end of the shaft 31 extends through the wall 36 of a cab of a tractor or other device for operating the snow plow and is provided with a hand wheel 37.

By turning the hand wheel 37 the shaft 2l is rotated by means of the gears 32 and 30 rotating the drum 22 and winding the cable (lll or chain 29 thereon.` By this means the plate or frame 23 is drawn upward around its pivot 25 carrying the carrier wheels 28 into contact with the road surface and by continuance of the upward pull exerted by the cable, permitting the snow plow to re-engage the snow surface.

It will be noted that the plate or frame 23 is so mounted that the rear end of the plate counter balances the weight of the forward end and the wheels 2S carried thereby and therefore whenthe undercarriage isnot in operation supporting the snow plow the plate assumes a downwardly inclined position towards its rear edge, holding the wheels 2S clear of the ground.

From this description it will be seen that I have devised very simple and positive means whereby the angular position of a plow ma y be readily adjusted whenever desired, and at the same time I provide simple means whereby the snow plow can be lifted bodily from its operative position to be carried by an un dercarriage so that it may be readily moved from place to place.

IVhat I claim as my invention is:

In a snow plow7 the combination with an inclined platform haviiu;l a forward cutting edge and plow members carried upon the platform, of opposing vertical guides located adjacent each side of the plow, a frame slidable within the guides, means for seeurineV the frame in any position to which it is adjusted within the guides, and push bars pivotally connected at-'their forward ends to the platform and supported at their rear ends upon the adjustable frame.

JAMES ALEXANDER LITT.

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